refactor(scanner): more basic work to get the scanner just running

lstMobile/src/app/(tabs)/_layout.tsx

@@ -1,38 +0,0 @@
-import { Tabs } from 'expo-router'
-import React from 'react'
-import { colors } from '../../stlyes/global'
-import { Home,Settings } from 'lucide-react-native'
-
-export default function TabLayout() {
-  return (
-    <Tabs
-        screenOptions={{
-            headerShown: false,
-            tabBarStyle:{
-                
-            },
-            tabBarActiveTintColor: 'black',
-            tabBarInactiveTintColor: colors.textSecondary,
-        }}   
-    >
-    <Tabs.Screen
-        name='index'
-        options={{
-            title:'Home',
-            tabBarIcon: ({color, size})=>(
-                <Home  color={color} size={size}/>
-            )
-        }}
-    />
-    <Tabs.Screen
-        name='config'
-        options={{
-            title: 'Config',
-            tabBarIcon: ({color, size})=> (
-                <Settings size={size} color={color}/>
-            )
-        }}
-        />
-    </Tabs>
-  )
-}